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Activating reversible carbonate reactions in Nasicon solid electrolyte-based Na-air battery via in-situ formed catholyte

Author

Listed:
  • Heetaek Park

    (Pohang University of Science and Technology (POSTECH), 77 Cheongamro, Namgu)

  • Minseok Kang

    (Pohang University of Science and Technology (POSTECH), 77 Cheongamro, Namgu)

  • Donghun Lee

    (Pohang University of Science and Technology (POSTECH), 77 Cheongamro, Namgu)

  • Jaehyun Park

    (Department of Energy Engineering School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) 50 UNIST-gil)

  • Seok Ju Kang

    (Department of Energy Engineering School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) 50 UNIST-gil)

  • Byoungwoo Kang

    (Pohang University of Science and Technology (POSTECH), 77 Cheongamro, Namgu)

Abstract

Out of practicality, ambient air rather than oxygen is preferred as a fuel in electrochemical systems, but CO2 and H2O present in air cause severe irreversible reactions, such as the formation of carbonates and hydroxides, which typically degrades performance. Herein, we report on a Na-air battery enabled by a reversible carbonate reaction (Na2CO3·xH2O, x = 0 or 1) in Nasicon solid electrolyte (Na3Zr2Si2PO12) that delivers a much higher discharge potential of 3.4 V than other metal-air batteries resulting in high energy density and achieves > 86 % energy efficiency at 0.1 mA cm−2 over 100 cycles. This cell design takes advantage of moisture in ambient air to form an in-situ catholyte via the deliquescent property of NaOH. As a result, not only reversible electrochemical reaction of Na2CO3·xH2O is activated but also its kinetics is facilitated. Our results demonstrate the reversible use of free ambient air as a fuel, enabled by the reversible electrochemical reaction of carbonates with a solid electrolyte.

Suggested Citation

  • Heetaek Park & Minseok Kang & Donghun Lee & Jaehyun Park & Seok Ju Kang & Byoungwoo Kang, 2024. "Activating reversible carbonate reactions in Nasicon solid electrolyte-based Na-air battery via in-situ formed catholyte," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47415-0
    DOI: 10.1038/s41467-024-47415-0
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    References listed on IDEAS

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    1. Mohammad Asadi & Baharak Sayahpour & Pedram Abbasi & Anh T. Ngo & Klas Karis & Jacob R. Jokisaari & Cong Liu & Badri Narayanan & Marc Gerard & Poya Yasaei & Xuan Hu & Arijita Mukherjee & Kah Chun Lau , 2018. "A lithium–oxygen battery with a long cycle life in an air-like atmosphere," Nature, Nature, vol. 555(7697), pages 502-506, March.
    2. Jun Lu & Yun Jung Lee & Xiangyi Luo & Kah Chun Lau & Mohammad Asadi & Hsien-Hau Wang & Scott Brombosz & Jianguo Wen & Dengyun Zhai & Zonghai Chen & Dean J. Miller & Yo Sub Jeong & Jin-Bum Park & Zhiga, 2016. "A lithium–oxygen battery based on lithium superoxide," Nature, Nature, vol. 529(7586), pages 377-382, January.
    3. Tao Zhang & Haoshen Zhou, 2013. "A reversible long-life lithium–air battery in ambient air," Nature Communications, Nature, vol. 4(1), pages 1-7, October.
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